=============================
[ BUG: Invalid wait context ]
6.13.0-rc7-syzkaller-01131-g8d20dcda404d #0 Not tainted
-----------------------------
udevd/5840 is trying to lock:
ffff888026301bd8 (&sighand->siglock){-.-.}-{3:3}, at: __lock_task_sighand+0x149/0x2d0 kernel/signal.c:1379
other info that might help us debug this:
context-{5:5}
4 locks held by udevd/5840:
 #0: ffff88807b8a2420 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:516
 #1: ffff8880349bb490 (&sbinfo->stat_lock){+.+.}-{2:2}, at: shmem_free_inode mm/shmem.c:419 [inline]
 #1: ffff8880349bb490 (&sbinfo->stat_lock){+.+.}-{2:2}, at: shmem_evict_inode+0x93e/0xa80 mm/shmem.c:1306
 #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: __bpf_trace_run kernel/trace/bpf_trace.c:2361 [inline]
 #2: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: bpf_trace_run2+0x1fc/0x540 kernel/trace/bpf_trace.c:2403
 #3: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 #3: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
 #3: ffffffff8e937ae0 (rcu_read_lock){....}-{1:3}, at: __lock_task_sighand+0x29/0x2d0 kernel/signal.c:1362
stack backtrace:
CPU: 1 UID: 0 PID: 5840 Comm: udevd Not tainted 6.13.0-rc7-syzkaller-01131-g8d20dcda404d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
 print_lock_invalid_wait_context kernel/locking/lockdep.c:4826 [inline]
 check_wait_context kernel/locking/lockdep.c:4898 [inline]
 __lock_acquire+0x15a8/0x2100 kernel/locking/lockdep.c:5176
 lock_acquire+0x1ed/0x550 kernel/locking/lockdep.c:5849
 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
 _raw_spin_lock_irqsave+0xd5/0x120 kernel/locking/spinlock.c:162
 __lock_task_sighand+0x149/0x2d0 kernel/signal.c:1379
 lock_task_sighand include/linux/sched/signal.h:743 [inline]
 do_send_sig_info kernel/signal.c:1267 [inline]
 group_send_sig_info+0x274/0x310 kernel/signal.c:1418
 bpf_send_signal_common+0x3c4/0x630 kernel/trace/bpf_trace.c:881
 ____bpf_send_signal kernel/trace/bpf_trace.c:886 [inline]
 bpf_send_signal+0x1d/0x30 kernel/trace/bpf_trace.c:884
 bpf_prog_631417f49dd64198+0x25/0x48
 bpf_dispatcher_nop_func include/linux/bpf.h:1290 [inline]
 __bpf_prog_run include/linux/filter.h:701 [inline]
 bpf_prog_run include/linux/filter.h:708 [inline]
 __bpf_trace_run kernel/trace/bpf_trace.c:2362 [inline]
 bpf_trace_run2+0x2ec/0x540 kernel/trace/bpf_trace.c:2403
 trace_contention_end+0x118/0x140 include/trace/events/lock.h:122
 __pv_queued_spin_lock_slowpath+0xb7e/0xdb0 kernel/locking/qspinlock.c:557
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline]
 queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116
 shmem_free_inode mm/shmem.c:419 [inline]
 shmem_evict_inode+0x93e/0xa80 mm/shmem.c:1306
 evict+0x4e8/0x9a0 fs/inode.c:796
 do_unlinkat+0x512/0x830 fs/namei.c:4594
 __do_sys_unlink fs/namei.c:4635 [inline]
 __se_sys_unlink fs/namei.c:4633 [inline]
 __x64_sys_unlink+0x47/0x50 fs/namei.c:4633
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f5ee3b68da7
Code: f0 ff ff 73 01 c3 48 8b 0d 7e 90 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 57 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 51 90 0d 00 f7 d8 64 89 01 48
RSP: 002b:00007ffcc8bf1b08 EFLAGS: 00000202 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 000055e7872ad120 RCX: 00007f5ee3b68da7
RDX: 00007ffcc8bf1b2b RSI: 000055e7872914cd RDI: 00007ffcc8bf1b18
RBP: 000055e78fc71e80 R08: 0000000000000000 R09: 00007ffcc8bf1488
R10: 0000000000000010 R11: 0000000000000202 R12: 00000000000000a8
R13: 00007ffcc8bf1b18 R14: 0000000003938700 R15: 000055e7872ad160
 </TASK>